http://www.dailymail.co.uk/news/art...ar-One-Christmas-Day-truce-1914-revealed.html
The unofficial truce took place on December 24, 1914, in the trenches around Ypres.
It started with German soldiers putting decorations up around their trenches and singing Christmas carols, including Stille Nacht - Silent Night.
The British soldiers responded by singing O Come all ye Faithful.
Soldiers on both sides then shouted Christmas greetings to each other and suggested meeting in no man's land when they shook hands and exchanged cigarettes.